[EL6] Adding possibility to set ganglia->globals->deaf parameter for gmond.conf

[EL6] Adding possibility to set ganglia->globals->deaf parameter for
gmond.conf
[EL6] Adding possibility to set ganglia->globals->host_dmax parameter for gmond.conf

[EL6] Adding possibility to set ganglia->globals->host_dmax parameter
for gmond.conf
[EL6] Adding possibility to set ganglia->globals->send_metadata_interval for gmond.conf

[EL6] Adding possibility to set ganglia->globals->send_metadata_interval
for gmond.conf
[EL6] Adding possibility to set udp_send_channel >bind_hostname in gmond.conf

[EL6] Adding possibility to set udp_send_channel >bind_hostname in
gmond.conf
Renaming ganglia_globals_* variables to globals_* and adding description in the README

Renaming ganglia_globals_* variables to globals_* and adding description
in the README
Merge remote-tracking branch 'upstream/master' into globals
Added additional params
Merge remote-tracking branch 'upstream/master' into globals
Fixed scope
Removed note about specific changes to RHEL6/CentOS6
Formatting etc
Merge pull request #30 from NoodlesNZ/globals

Additional work for PR #18